ERHC Energy Inc (ERHE)

[bayfisherii]

Pete,

The casing goes betwen the production string and the outside wall of the hole. The production string sits in a packer just above the perf's so that (in theory) no oil is produced up the casing.

In the lower 48 there are completions called 'barefoot completions' where casing is not used, but I cannot see them completing a JDZ well in this manner.

Bayfisher

And yes drilling is very expensive.